The are couple of problems with your ranking system (which I am not sure what it is based on?? Are you simply looking at yards? Are you looking at catches? Are TDs accounted for?? What about average yard per catch??) ;
1. There are qualities that are not measured in it. This year Keyton has improved from previous years. He has a higher percentage of catches (& thus lower percentage of drops) when the ball is thrown his way. He also is a significantly improved downfield blocker, which is an aspect of the WR position way too many people overlook and undervalue.
2. Comparing Keyton to Hyatt is comparing apples to oranges. Hyatt is a slot receiver and Keyton is a perimeter guy. Hyatt is a starter in the slot, whereas Keyton is a backup to Tillman & McCoy on the perimeter.
Personally, I’ve been impressed with all of our WRs this year! I believe several of them have made significant developmental strides. However, you can’t start all of them. Just because someone doesn’t start now, doesn’t mean they’re incapable of being a quality starter later.